Grinding machine



June 24, 1930. w. L. BRYANT 1,

GRINDING MACHINE Filed Dec. 2. 1925 9 Sheets-Sheet l June 24, 1930. w. BRYANT 65,

I GRINDING MACHINE Filed Dec. 2, 1925 9 Shets-Sheet 2 June 24, 1930.

BRYANT l ,7 65,787

GRINDING MACHINE Filed Dec 2, 1925 9 Sheets-Sheet 5 June 24, 1930. w. L. BRYANT 1,765,787

GRINDING MACHINE Filed Dec. 2. 1925' 9 Sheets-Sheet 4 June 24, 1930. RY NT 1,765,787

GRINDING MACHINE Filed Dec. 2, 1925 9 Shets-Sheef ,5

| .7l lllllilllllllllllllllllllllllllllll1|ll lllllllllllllIllHlllllllLi" June 24, 1930.

' w. L. BRYANT GRINDING MACHINE Filed Dec. 2, 1925 9 Sheets-$119M. 6

lg Q 6.

June 24, 1930. w BRYANT 1,765,787

GRINDING MACHINE Filed Dec. 2. 1925 9 Sheets-Sheet 7' V y I June 24, 1930.

W. L. BRYANT GRINDING MACHINE Filed'vec. 2. 1925 S-Sheets-Sheet '8' June 24, 1930. w. BRYANT 5,787 I. GRINDING MACHINE Filed Dec. 1925 9 Sheets-Sheet 9 Patentediunie 24,1930 1,765,787

I WiLJ IQI A M LJBRYANT, or SPRINGFIELD, VERMONT" ITE GRINDING incurrin- Application filed e a, 1925-. Serial m; 72,692.

. v This invention relates to grinding maq Figures 6 and 7 are detail front elevations chines more especially of that general type of the air valve and actuating mechanism; disclosed in Patent No. 1,0515%83, grantthe actuating mechanism being shown in difed anuary 28', 1913 in which the grinding ffer ent positions in the two figures.

3 ,whee1 is 's'wingingly mounted, being fixedto Figures'8 and 9 are detailsectionson lines 5 i 'or integral with a rock shaft which is axially 88, and 99, respectively, of Fi'gureio: reciprocable, In that jpatejnt the grindin'g l FigureslO, and 11 aredetailfsections'on' mechanism is shown as'f'carr'iedby the rock lines 101O and 11'-11, respectively, of Figshaft betweenapair of'supporting bearings. ure 8 V f L:

' 10 According to the present invention the Figures 12 and 13 are perspectiveViewsoffiQ grinding mechanism ispositioned'at onefside valve elements. j I I of both hearings": Bymakingthis change the F igurel is a somewhatdiagrammatic ele;

ifloor space required for themachine-has been 'Vation showing the air Valve and certain air I 7 reduced nearly one-half and a" stifl'er conjactuated parts controlledthereby; g 15 's'truction has been effected. Thus'more ma} ,Figures 15 and 16 are detail jsections on V chines may be placed in a given floor larea lines 15,15 and 16116, respectivelyflfFigand it is 'possiblelito op'eratethese machines u r e l a I w'itha high degree of accuracy with less jef- Figure" 17 is a sectional perspectiy ef'bil a 7 fort, thus givingahigher production rate vfor worn; gear shown inlFigure 15. 7

'20 each machine. '1 p I g The machine controls have also be,en; re-'- slide 'engageahle with the worm gear'shown ducedto one, which is positioned-atfthe left 'in)-Figures land 17. I

of the machine so that'the operator has his Figures 19 to 21 are detailfvi'e'ws offcerright' hand freeforotherpurposes,thusfar taiii parts shown assembledfinfFigure '1, 2, 25 cilitating inspection and gagingof the work fl and 16. g I as it approaches its desired dlmensions. ijj'Thismachine 'as' shown best in Figures 1 Th g i l gi e h sm UPPP gQ Ck' and {3; comprises a standard 1 having at its af h S also b en'made hollowlllihe' Pr upper end a pair ofispace'd bearing portions (int Q 3 d h9 counterlshfifti for 2 and? in whichis journaled and axially" I this'grin'd n'g' ism t e jQU slidable a sleeved rock'shaft 4Q outwardly t e thus re d r n em i h i cr of the bearings 2 and 3'this rock shaft 4'has V compact and aYo ding the neces an fined thereto an arin'5and'at'the ir'ee end of FWth Sh ere Fh the grmd' this arm and arranged in 'parallelvrelation to I ing mechanism. The nachine may thus be the r c shaftjis aIrQtar}, shaftfi-h-aving a made'seH'cOntamed h 1t can be Setup grinding wheel or tool v7 on its innerend. Whe e i xw t ou ref-Grendel? to Shaft J our'naledaxially Within the rock shaft 4 is 7 arrangamenti h p' V acountershaft 10 which extendsthrou'gh'the F El mP ten e Ofthls rock shaft and has fixed thereto "on'it s' for" I l mf i i sfll fll v u obi t nd ward nd a belt pulle 11 oVer.,which'eXtends l Gene as belt .12 see Fi m i jand iywhich to I beI-hadirto the m -W 'dmwlngs about a d riv'eipifilevflw'fiiedtdthe shaft-I6" I h r" f th s Th'b1t12 II Figure lisa fro'ntelevation of thefma'chiner QMeP F r 9 e 3 1 95- i V Figure 2 isa leftend'elevation thereof. a e se' Q W P mend a st nce; FigureB is a Vertical section onfline 3-53' 5M Pi ?{3 113 hy-anad-fllfla sp gzss ofFi yg, a y tens on devlce-ll. Atcthe opposlte end of the v I Figure 4L is a sectioncn final -4 vof Figcounter shaft lOfis carried: a belt gpulley 15' 'ure, 1 over which passes a'beltlG which alsoen Figure'oisa right end elevation of theupw gages'over alcingpu'lley l'? fixed to a power c shaft 18 ournalcl the lower portwnof lfifl per portion of the machine.

' Figure 18 is a perspectiveof an adjustin g' -7o ii '57 by hand is notso limited, but isilimited onlyby the stops 2'Zand 28 which are beyond the normal operating limits imposed by'the V adjustment of the block 38. Thisadditional fered within any way jby the tool.- By this traversing movement which may be imparted to the tool by manipulation of the lever 5'? not only may be availed of to remove the tool from operative,relationit'othe work in its path of reciprocation, but according to this inventionit is also. availed of to effect the.

stopping of the rotation of the work and also to. swing the rock shaft toian extent sufiieient to remove the tool fromin front of the Work so that the work may thenbefreely'removed from the Work holder without being intermeans the machine controls have been reduced .to a single leveriby the'inotionof which the power traverse may be started or stopped and, when stopped, the rotation'.of =tlie work may be stopped,'.and the tool removed from in front ofthe work beyond its-feed limits. The feed of the tool iseifeotedby' rocking the arm 5'soa's to movetlie'tool laterally of" its,traversingmovement,v In order that this imay be done thearm ;5"is providedlwith an arched extension;whi'chlpasses around one edge of and beneath a pan 81 positioned be n'eath the work holder 20 Sand the main 'portion of'the arm 5 in wliich the tool shaft is contacts with a Yfeed mechanism being so biased "by the weight of the arm and parts carried therebyflwThis feed mechanism may be of any suitable type, but as herein shown comprises a'screw 85 threadedxina nut. 86 journaled in a portion of the "stander-dies shown'best inFigure 4. Thisscrew- 85 is per 'mitted an axial movement, but is held from rotation, and carries (mas inner end a head 87 which is forked to" receive between the forked portions a roller88 .having'a journal pin 89. The nut86, has keyedtheretoa feed wheel90 which may be provided with handles 91' by which it may betnrned; 'The wheel 9O is provided with teeth 93'thereon." Turning motion of the wheel: 90' maybe effected by fixed thereto a:beltEpu'lley-102 "over which passes :a belt 1'03mwhichi passes @over a belt pulley 4 104 fixed toi the shaft "35 on which is alsofixed the wormqwheell' dw At each rotation 'of the shaft 101: the cam effects a rocking motion of the, arm 98 which in turn causes a step by step turning movement of thewheel 90 which thuseifec'ts'a progressive intermittent inward movement of the screw 86. In order that the arm 80 may bear accu rately against the roller 88 and yet be. per mitted to traverse, av removable adjustable wear piece to engagethe roller 88 has been provided; This comprises a cylindricalbar (Figure 4) positioned betweenclampingj jaws 111 and 112, the jaw lll'being integral 7 with the extension80, provision being made an the well known manner for anguarly ad-v justing this bar 110 in order to insure proper 'zfeed' positioning offthe tool through its trav- V The arm5 opposite to its extension 80 is thrown as to disengage the sector 46 it'may be swung to rock the shaft 34 and effect an 'foutward traverse of the tool sufficiently to bring the lug" 121 against the upper end of a lever 123, continuedtraversi-ng motion-of the'armthereupon moving the lever 128 bod- ,zily intov the position shown in Figure 6.

This lever-123 is fixed to a rock shaft l24 i so that this shaft is moved axially asthe lever ismoved bodily in this direction; This shaft 1.124 extends within the standard 1, as; shown best in F igure 3, and it isnormallyj pressed inwardly by'means of a spring 125, su'rround ring it and bearing between a collar 1 26 fixed I v thereto anda shoulder- 127 on the standard; journaled and" beneathrhis an it normally a This lever 123is also provided witha guide pin 128 which is 'slidable through the end of an arm129. This arm -129,"as shownbest in Figure 5, is pivoted at 130 to the outer end a j of 'a ipl'unger 131 which is slidable" within an-air cylinder 132 and'the arm 129 is guided I against motion' axially of'the guide pin 128 I by: means ofupstandingfarms 133 and 134 flOn the cylinder 132 back of which the arm 129 passes; The rock shaft124 hasIits outer end formed as a valve actuating. member .for cert'ain' fluid pressure motors to be later .de-

scribed; As shown'best in Figure9 it has atits end a conical portion andinwardly from this endaportionof reduced diameter. a'ty141.- This end portion of the rockshaft slides and rocks'"-through an extension 142 of theair cylinder 132. ,The extension 142 has a pair of perforations143 and144 arranged transversely of the axisof therock shaft- 124 andwithin these perforations are" slidable valve plungers 145jandl146 each constructed as shown detached in Figure 13 having roundediheads, which engage against the.

outer face of the rockshaf-t' 124. "l he valve plunger 146" has formed thereon a valve' 147 which may seatiagainst a valve seat 1489-in a passage 149. The outer end of this passage 149 is normally fclosed 'ofi'lby ;-means of: a threadedw'plug .150; and in communication withthis passage :isa port 152through which Above the valve seatj148 is a 155 normally partly closed by a needle valve 156 with a passage 155 'leading to the' interiorof the'cylinder132 behind the plunger piston 131. so that as the shaft 124 is moved to the right. as by the impingement of the lug 120 against the lever 123,.the-valve 147 is opened permittingai-r to pass by this valve and past the needlevalve 156 into the cylinder". 132. It also. passes into this. cylinder,

.- by a less restricted passage through agpor-t 157 past a spring seated ball check valve'158 and through'a'p'ort 159.. When the valve 146 is opened to cause the air cylinders to "be operated [in this. manner the plunger 145 en gages within the reduced portion 141 of the. a

actuating rock shaft 124 so that the Valve 200 .ca-rrie'd thereby is forced againstits seat 201 .by'the pressure of the air within the chamber 1 68. This forces the plunger 131 out wardly whichactsthrough the arm 129 to swing the lever 123into the position shown f-ull'lines in Figure 5. I 'I'tsupper end which which is fixed a belt pulley 191fover which is formed with a curved engagement face 160, engaging a lug 161 on the arm 5ro'cks.

thi'sarm about the axis of therock shaft 4 intoth'e'inoperative position shown inFigure 5in full'lines wherethe tool shaft 6 is lateral ly considerably removed from'alinement with the axis of the work holder 20. Whenin'this position theeupper end of thelever 1'23 passes V between the lugs 120 and 121 so that the lug.

120 extending outwardly of the upper end "of the l'ever 123 prevents the'arm'5 from being traversed in the opposite direction suffic'ently to bring thev tool to the work.

Simultaneously with this action the air passes,

7' from the chamber 153 through'aport 165 past a'needle valve 166 throughla passage 167 communicating with a chamber ,168 having its outer 'endclosed as by means of a threaded --plug 169 and out through a port 170 with which communicates a pipe 171. This pipe leads toa'pair'of fluid pressure'cylinders 172 and 173 shown in-Figure 8." The air cylinder' 172 is so arranged that when air is ad mitted back" of its plunger. 17 4. driving con nections from the driver shaft 18 to rotate the work holder are interrupted and the cylinder 173 is sofarrangedthat when its plunger 17 5 is pushedupwardly it bears against a friction wheel 177 fixed to the shaft 21' to stop the V rotation'of this shaft. 5 The needle yalves. 1'56 an'd'1 66' are similar infconstruction and r r are shown in detail in' Figure 12'.

ffii se thatthe shaftls is journaled atone and.

holder is stopped in a bearin block-180 fixed to .one' fa'ce ofthe portion 181 extending inwardly of't'he standard wall and having a portion 1820f reduced diameter thereon. Spaced fromthis reduced portion is a bearing ring .184 fixed to the standardl and axially slidable throughthis ring is a sleeve 185. having at its inner end a reduced circular portion 186. Journaled on the reduced portions 182 and 186 is a stirrup member 187, shown in end elevation in'Fig standard 1 and that'thisblock 180 has a hub I ure 14. This Qstirrup member has a longij tudinalfslot 188:ftherein so that it may be placed laterallyiover the shaft 18 with its end portions arcuately formed as at 189 to .bear' on the reduced portions 182 and 186 so as tobe r-ockably supported thereon. Bymoving the "sleeve 185 axially to spacethe bearing por tion 186 from the bearingportion 182 this member 187 may be placedin position over the shaft and the bearing portion 182 and the, sleeve-185 maythen be movedaxi'ally. toward 7 the portion 182 to bring the bearing portion 18 6.into bearing're'lation with the corresponding end of the member 187. Thus this member may be inserted orremoved without requiring the removal of the shaft 18; This 1 member 187 carriestherein 'a'shaft 190 on passes ajbelt 192 which also pas sesabout a I pulley 193 keyed to. thework holder rotating shaft21. The member 187 being .free to ro- "tate about thega'xisof the power shaft'18 as a center acts by its unsupportedweight to.

tension the belt 192:,by reason of its eccentric pivotal mountingon the shaft 18. Driving connections are employed'between the shafts 18Iandthe shaft19O comprising intermesha f ing gears194 and'195 fixed to these shafts, respectively. V

'The plunger 174 of the power cylinder 172 is positioned beneath the member 187 in substantial vertical alinement with th'eaxis of the shaftf190'and when-fluid under pressure plunger and is rocked upwardly about the axis of the shaft 18 and the tension onthebelt 1 7 192 released so as tov release the operative 7 driving connections between the powershaft and the work holder rotating shaft. At the same time that this is done'the cylinder 17 3 V is also supplied with fluid under pressure and its plunger is brought up against the brake wheel 17, so that the rotation of 'thei worki The parts being.

in this position it is then 1 possible for theoperatorfbyswingingthe handle 57 slightly' inthe-opposite irection to effect a 'slight'return-traverse' of'the arm 5,the'1ugi 120 engaging the lever 12.3 and movingit axially of the rock shaft 124 until this lever is brought'up against the frame of the f machine as shownin Figure 7'and 1nd0tted V lines in Figure 9, this traversing act- OI rJf lsof ff the shaft 124 being aided iby the spring 125,

When this occursthevalvel lfl ispermitted to close against'its seat, thetapered portion l40lof'the shaft 124 riding off the end of the plunger l4-l6 and at'thessame time the inclined portion 205 of the shaft 124: engages thel'end of theplunger 145 thus unseatingthe valve 200,-permittingrthe air to pass from the passage 168 tothe' exhaust" port 210.

-This permits exhaust of :fluid pressure from the the cylinders 172 and 173 withdrawing braking efiectfrom the shaft 21 and permitting reestablishment of driving connections between this shaft and the power shafti18 by reason of the downward-rocking of the mem- Y her 187 which acts to tension the belt 192.

Likewise the fluid pressure ispermitted to exhaust from the cylinder 182 but since the check valve 158 prevents exhaust thr-oughthel passages 159 and 157, such exhaust must take place entirely through theport' 155 past the needle valve 156 and'a'lso 'through the port 165-past the needle valve 166 into the chain her 168. Thus'the exhaust from the cylinder l passes a belt 221, which, as best shown-in a motor 224 having,its' baseopivoted at 225 v to the standard 1 nearitsbase and held up 132 is much retarded sothat the returnof the plunger 131 toits inward position is rel-' atively slow and the return' of the arm 5 to its position where :the bar 110Iimpinges on the roller 88 is made gentle'so that no damaging shock is imparted to the a feed mechanism when the parts finally :come' into contact; WVhen the arm 5 has been returned-to its position' in effective relation to the feed mechanism the lug'120-is so angularly'disposedl relative to the lever 123, asshown in dotted lines'in'Figure 5, that itoffers no obstruction to completing the return traverse of the tool'to bring itinto operative alinement or relation to the work. i By effecting this re- ;turn traverse'to-the point where the lug may be brought intoengagement within the notch 61, the mechanism is then-connected for power traverseofthetool;

The'powerv shaft 18 in'ay be driven in any 1 suitable manner but-as herein shown it is provided with a belt pulley ,220 over which Figure 2, passes about a'drive pulley 223 to in proper, relation theretolQyv the pivoted clamping screw 2 26;, i V, 1 -Having thus described an embodiment of this invention it, should b efevidentto those skilled in the art that various changes and: 'modifications maybe made therein without departing from its spirit] or scope as'defin'ed by the appended claims.

' ment to actuate said'tool.

I acounter shaft journaled in said rock shaft, r and drlvmg connectlonsbetween-said coun ter'and rotary shafts.

2. A machine of the class'described comprising a pair of spaced bearings, a sleeved rock shaft journaled in said bearings,an arm 7 fixed to said rockshaft outwardly of said bearings, a rotary shaft journaled in said arm in substantially parallel're'lation 'to 'said rock shaft, a rotary tool fixed to said rotary shaft, atcounter shaft journaledin said rock shaft, and. driving connections between fsaid counter and rotary shafts beyond one end of saidrock shaft. V

8. A machine of the class describedcomprising a standard, a pair of spaced bearings carried by said standard, a sleeved'rock shaft journ'aled in said bearings and extending on opposite sides thereof, an arm fixed to one end of said rock shaft beyond said-bearings, a rotary shaft journaled in said'arm, V a tool fixed to the inner end of'said rotary shaft, a counter shaft extending axially through said-rock shaft, driving connections from one-end of said counter shaftsto said 1 rotary shaft, a rotary work holder carried by'said standard to hold WOIk inoperative I relation to said tool, a drive shaft, and driv ing connections from saiddrive shaft to said counter shaft and to said work holder;

4. Ina machine of the class described, a tool, power means,'a rock arm connectedto be rocked by said power means, a rock shaft operatively connected to said tool, and ahand" lever carried by said rock shaft and movable into and out of operative engagementwith said arm.

5. Ina machine of the class described, a tool, power means, operative connections between said tool and-power means comprising a rock member, an element rockable to actuate said tool, and a lever-pivoted to saidrock element and swingable intoandout' of en-- gagement with said rock'm'ember, wherebywhen said, leveris in such engagement said power means actuates said tool, said lever being hand actuable when out of 6. In a machine of the class described, a

7 tool, power means, operative connections between said tool'and power means comprising 7 a rock member, an element rockable to actuj. ate said tool, a lever pivoted to said rock element and-swingable into and out" of engagement with saidrock member, whereby when means'actuates said tool, said'lever being such engage- 1 said lever is in such engagement said power hand actuable when o'ut'of such engagement to"actuate.said tool, and means tending to retain said leverin either of its rocked fposif tions. a

'7. In a machine of" thejclass-describ ed, a l

tool, power means, and operative connections between said power means and tool cmpris ing'a pair of rock members, one'ofsaid mem bars. Connected to be, rocked-by said power; 7

said arm, power means for reciprocating said means and the'other member rockable to actu:

ate said tool, and means for operatively con- 'necting' and disconnecting said members.

8. In 'a machine of the class described, a

" tool, power means, and operative connections between said power means and toolcompris- 'ing anpair'of rock'members'one of said members connected to berocked. by-said power means and the other member ,rockable to actus ate; said tech-and a lever pivoted to one of saidfmembers, and swingable into and out. of

a gage ent with thejother ofsaid members,v wherebysald power means maybe opera -tively-l'connected or-disconnected from said tool '1 7 7 :9. Infa; machine of the" class described, a

tool, power means for traversing-said tool, yand'an operator controlled member actuable to opieratively connect anddisconnect said V t a reciprocating said; rock shaft between llmits,

tooland power means vand: also. actuable when I V saidfp ow'er means is disconnected toftraverse 7 I. 'SEtldfOOl.

10.; In a machine of the class-described, a. tool, powermeans, and operative connections. between said-means and-toolacting to move said' tool, 'said connections including a hand leven movable to. disconnect. said means and tookand actnable by hand-when scjmoved to ve'said't ll r 1 a 11.; In a machine of the class, described, a Q01,,pQWermea-ns for reciprocatin said tool,

andan operator-actuable member actuable to v operatively connect and; disconnect said powermeans and tool and operable whenisaid power means is disconnected to reciprocate said tool. i '1 r 121 Ina machine'ofthe class described, a

tool, power means for reciproca ing saidtool between limits, and operator-actuable means foroperatlvelyiconnectmg and disconnecting sal" .POW er means. and. tool and "operable wh lllsaid' power meansis'disconnected to reciprocate saidtooland beyond one of said limits,a;nd means a'ctingwh'en saidtool has been movedbeyondsaidone limit for moving:

said-tool laterally. ,c I H I 13'. In a machine Qf-theclaSs described, a tool, "means for reciprocating said tool, and means acting on movementofsaid tool in its reciprocation beyond a predetermined limit- 0 move said'toollaterally of its reciprocation, I i e a a 4. In a machine of the class described, a recipjrocatory and rotary tool, apower shaft,-

connections from said shaft-for rotatingsaid:

tool; and 7 connections 7 from said shaft for re; .ciprocatingfsaid toolv between limits, said reciprocating connectionsincluding an open ator-controlled member actuable, to. opera tively associate or disassociate said shaft and tool, said'mernber beingactuabjle when indisassociating'positioni to reciprocate said tool.

7 l5. 'machinejofithe class described com-. prising an axially 'movable rock shaft, an

naeaasa arm carried. by .said'shaft, a tool carried by rock shaft to;effect-traversing movements ofsaid tool within prescribed "limits, means actuable by the operator to operatively dis.-

. connect or connect said'pow'er means and rock.

shaft, and also actuable to reciprocate'said rock shaft independently of said power 1" means when said power means is operatively disconnected and beyond one of said limits, and'means acting'when said shaft is moved beyond said one limit to rock said shaft and swing said tool; away from the work.

16. A machine of the class described comprising a reciprocable rock shaft, an arm care riedf by said rock shaft, -a-. rotary shaft.

journaled in said arm, a tool carried by said shaft, means actuated by said power shaft for 'rotaryshaft, a power shaft, driving connec tions between, said power shaft and rotary 4 '5 said means. comprising a member aotuable by theoperator to render, operative or inoperati-ve said; reciprocating means, said member being actuable 'when said reciprocating means is inoperative-to reciprocate said: shaft ciprocating. said; tool, and fluid pressure means acting when said tool is reciprocated beyond a predetermined normalflimit for rendering inoperative said work holder rotating means. 7

18. In a machine of-theclass described, a reciprocatory tool, a, rotary work holder, means forrotating said-holder, means for reciprocating said vtool, and fluid pressure means acting'when said tool; is reciprocated beyond a predetermined-normal limit for rendering inoperative said work holder rotating means and for stoppingits rotation.

l9; Ina machine of the class; described, a

movable tool, a rotatable work. holder, m v for rotating said holder, means. for moving said-tool, and fluid'pressure meansactuated on an abnormal'movement of said tool for rendering inoperative said rotating means.

20. In a machine of the class described,a movable tool, acrotatable workholder, means for rotating said holder, means for moving said tool, and fluidwpressure means actuated on an abnormal movement of said tool for rendering inoperative said rotating, means said tool, and fluid p ressure means actuated on an abnormallmovement of said tool'for rendering inoperative said? rotating means automatically when, saidfto'ol is moved beyond and for moving said tool fromits working position. v i

22. In a machine of theclass described, a-

reciprocable tool, means for moving said tool between normal limlts of reciprocation, means actuable to movesaid tool-beyond one of said limits, and means acting when said tool ismoved beyond saidjone limit-tomove said tool outof thepath of itsreciprocation.

23. In a machine" of the class described, a reciprocable tool, means for moving said tool between normal limits of-reciprocation,

means actuable ;to move said tool beyond one of said limits, means acting when said tool is movedbeyond said one limit to move" said tool out of the path of its reciprocation, and

means preventingoperative reciprocation of v said tool when it is out of such path.

24:. In a machine of-the classdescribed, a reciprocatory 'jtool movable laterally of its direction-of reciprocation, a rotary work holder, means for rotating said work holder, means for reciprocating said tool, and means acting on movementof saidtool-in its reciprocat on beyond a predetermined limit to render inoperative said rotatmg means and to move said tool laterally awayf m id Workholder. i v i 25. In a machine of the class described, a

reciprocatoryftool movable laterally of its direction of reciprocation, a rotary work holder, a power shaft, means actuatedrby said. power shaft for rotating saidjholder, means actuated by said power shaft for reciprocating said toolfsaid reciprocatingmeans including a member act-Liable by the operator to render operative or inoperative said reciprocating means, saidmember also jbeingopera tive to effect a lateral movemefntof said tool. 26. In; a machine of the class described, a reciprocatory tool movable laterally of its direction of reciprocation, a; rotary work holder, a power shaft, means actuated by said power shaftfor rotating said holder, means actuated bysaid power shaft for'reciprocating said tool, said reciprocating means including a member actuable byathe operator to render operative or inoperative said reciprocating means, and a' brake for stopping the rotation ofv said work holder, sald memassociating position to reciprocatesaid tool beyond one of said limits, and m'eans'acting said tool and to actuate said,

machine of-the class described; a

said limit to render inoperative said reciprocating connections.

28. In a machine of the class described, a

reciprocable tool, a rotary work holder, av

power shaft, connectionsfrom' saidsha'ft for rotating said work holder, connections from said shaft for reciprocating said tool between limits, said reciprocation connections including an cperatoncontrolled member actuable to associate or disassociate said shaft and tool, said member being actuable when in its disassociating position to reciprocate said tool beyond one of said limits, and means acting;

automatically when said tool'is moved beyond said limit to render inoperative said re ciprocating and rotary connections.

29. In a machine of the class described, a

reciprocable tool, a rotary work holder, at

power shaft, connections from said shaft for rotating said work holder, connections from saidshaft forreciprocating sa d tool between limits, said reciprocation, connections, including an operator controlled member actuable to associate or disassociate said shaft and tool, said member being actuable when in its disassociatingv position to reciprocate said tool beyond one of said limits, and means acting automatically when saidtool is moved beyond said limit to render inoperative said reciprocating connections and to "apply' a braking force to stop 'the rotation of said work holder. v I I v 30. Aimachine of the class described comprising a pair of spaced bear1ngs,a sleeved rock shaft journa'led in and slidable in said bearings, a counter shaftjournaled ,axiallyv within said rock shaft and movable axially therewith, an arm carried atone end of said rock shaft beyond said bearings, a rotary shaft journaled in said arm, a tool carried on the inner end of said rotary-shaft, driving connections between theouter end of said ro- 'tary shaft and said counter shaftoutwardly of said arm, a power shaft, means including a lever for effecting reciprocation of said rock shaftbetween limits to cause working traverses of said tool, said lever being operatoractuable to render inoperative j'said efiecting means and also actuable to reciprocate-said rock shaft and beyond one of said limits, means forrocking said rock'shaft to effect feed of said tool, and means acting when said rock shaft is moved beyond said one limit to rock said rock shaft to move said tool beyond the limits of its feedto remove it from; operative alinement with the work.

31. A machine of the class described comprising a pair of spaced bearings, a sleeved rock shaft ournaled n and slidable in said bearings, a counter 'shaft journaled axially within said rock shaft and movable axially therewith, an arm carried at one end of said rock shaft beyond said bearings, a rotary shaft journaled in said arm, a tool carried on the inner end of said rotary shaft,driving iao connections between the outer end of said rotary shaft and said counter shaft outwardly of said'arm, a power shaft, means'including a lever for effecting reciprocation of said-rock f shaft between limits, to cause working traver ses of said tool, said-lever being operator-- actuable to render inoperat ve said efi'ecting means and also actuable to reciprocate sald I 7 rock shaft and beyond one of said limits, means for rocking said rock shaft to efiect feed of said tool, means acting when said 7 rock shaft is moved beyond said one limit to rock said rock shaft to move said tool beyond the limits of its feed to remove it from operative alinement with the work, and means for;

preventing operative reciprocation of said rock shaft While said tool remains out of op- I erative alinement.

32. A machine of the class described com- 1 prising-a tool holder. a tool carriedby said 7 holder,.means normally in contact with said 7 holder andmovable toefiect feed movements of said tool','andrpower means actuable to move saidholder out of contact with said v '5? feedingmeans to an inoperative position. i L 33. A machine of the class described comprising aswingable'tool holder, a feed mechanism against which said tool holder normally engages by its Weight and actuable to 3 swing said holder upwardly, and means actuable to swingsaid tool holder out of contact f with, said feed mechanism, and actuable to permit the retarded return of said holder into such contact. -1-1 34. A machine .of the ,7 v V I prising a movable tool holder, a'feed mechani'smjaga-inst which said tool holder is biased to contact,- and means comprising a fluid pressure motor actuable to remove said holder 7 r from said mechanism, said Vmotor having a' restricted exhaust. to cause return of said holder into contacting relation to begently effected. I 7

i ,35. In a machine of the classdescribed, a

2' rotatable work holder, a tool movable sub stantially parallel to the axis of rotation of said work holder to effect working pressures of the tool on work carried by said holder,

7 means formoving said tool, laterally of its "59: traversing movement to feedit relative to the workfmean s to rotate said work holder, and means actuable tomovesaid tool laterally V beyond ;its feeding range When at theend of;

its'stroke when in operativerelation to the i :51 work, and to stop the rotation of'said tool holder.

36. In a machine of the class described, a j

1 rotatable Work holder, a tool movable substantially' parallel to the axis of rotation of said work holder to effect working pressures ofthe tool'on workicarried by saidrholder, means for moving said tool laterally of its traversing movement to feed it relative to the work, means to rotate said work holder, fluid pressure means actuable to stop the roclass described com ,tary shafts;

tation of said work holder and to move said tool laterally beyond said feeding range, and

moval; of the tool from work carried thereby. I

38. In a machine of the class described, a'

rotatable work holder, a tool arranged to traverse'work carried-by said'holder, an oper-f a-tor actuable member for effecting traverse of aid tool, and? means act ng automat cally on ;travers e of said tool'to a predetermined po nt out of'op'erative rel'ationfto the work to stop" the rotation of-saiel work holder and to move saidtool laterally of itsdirecti on: of

traverse away from the work. I

39; In a machine of the classdescribed, a

rotatable work holder, a tool for acting on work carried by said holder, andpower'means for rotating said work and for actuating said 1 tool, said machine including a single member actuable bythe operator to-stop said actuation of said tool,-t-o ,cause'removal of said tool from the work and t'o'stop therotation of said tool hold'er'.

40, In a machine of the class described, rotatable work holder, a tool for a'cting onf workcarriedby'saidholder,and power means for rotating said work and foractuatingsaicl' tool, said machine including a single member actuable by the operator to stop sai'd aot'uae tion of said tool to causeremoval of said tool I I from; the work,; and to stop the rotation of said tool holder, and to cause-return of the I tool, rotation of'the WOIk,'&I 1 d power actuation'of said tOOl'.

41. A machine of theclass described comprising abearing, a sleeved rock shaft jouriio n'aled in said bearing, an arm carried by" one end portion ofsaid shaft atone si'de of'said" bearing, a rotary shaft'j'ournaled'in said arm, LlSOOl'CiLITlQCi by said rotary shaft, a counter shaft j'ournaled in said rock shaft, and driving connections between said. counter and m 42. A machine of the class described com- I prising a: bearing, a reciprocable rock shaft 7 journaled in said bearing, an arm carried by one end portion of said shaft at one side of said bearing, a tool carried said arm,means forsupporting ork, means for reciprocating c said shaft to effect operative traverse of the work by said tool, and means for rocking said shaft to effect feed'and retractive movements to said-tool;

43. A machine of the class'defscribed com; prising apair of spaced bearings, a-rock shaft moun't'edfor axial movement in said bearings, V

an arm carried by saidrock shaft outwardly of one of said bearings for movement with said rock shaft, a tool carried'by said arm, and means for supportingwork inposition to be operated onby said tool. I

44. A machine of theclass described comprising a pair of spaced bearings, a sleeved rock shaft journaled in said bearings and axially reciprocable therein, an arm fixed to said rock shaft, a rotary shaft j ournaled in said arm, a rotary tool carried by-said rotary shaft, a counter shaft journaled in said rock shaft, and driving connections between said counter shaft and said rotary shaft.

45,, A machine of the class described comprising a pair of spaced bearings,,a rock shaft journaled in said bearings, an arm rockable with said shaft and movable lengthwise of the axisof said shaft,a tool carried by said arm,

a counter shaft journaled in said rock-shaft, and driving connections between saidcounter shaft and said tool. f

46. A machine of the class described comprising an arm, a pair of fixed bearings for supporting said arm for pivotal movement and movement lengthwise of its pivotal axis,

a tool carried by" said arm, a counter shaft coaxial with said "pivotal axis, and driving conlnections from saidcounter shaft to said 20 too 1 47. A machine of the class described comprising a bearing, an arm supported by said bearing for rocking and axial movement relative to said bearing, a tool-carried by said arm, a counter shaft journaled coaxilly withsaid bearing, and driving connections from said counter shaft to said tool.

In testimony whereof Ihave affixed my signature. Y

4o WILLIAM L. BRYANT. 

